ACPI: Change acpi_evaluate_integer to support 64-bit on 32-bit kernels
As of version 2.0, ACPI can return 64-bit integers. The current
acpi_evaluate_integer only supports 64-bit integers on 64-bit platforms.
Change the argument to take a pointer to an acpi_integer so we support
64-bit integers on all platforms.
lenb: replaced use of "acpi_integer" with "unsigned long long"
lenb: fixed bug in acpi_thermal_trips_update()
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 831883b..5e57a80 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -85,7 +85,7 @@
struct power_supply charger;
#endif
struct acpi_device * device;
- unsigned long state;
+ unsigned long long state;
};
#define to_acpi_ac(x) container_of(x, struct acpi_ac, charger);
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 5f1127a..2b77316 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -194,8 +194,7 @@
static int acpi_memory_check_device(struct acpi_memory_device *mem_device)
{
- unsigned long current_status;
-
+ unsigned long long current_status;
/* Get device present/absent information from the _STA */
if (ACPI_FAILURE(acpi_evaluate_integer(mem_device->device->handle, "_STA",
@@ -264,7 +263,7 @@
acpi_status status;
struct acpi_object_list arg_list;
union acpi_object arg;
- unsigned long current_status;
+ unsigned long long current_status;
/* Issue the _EJ0 command */
diff --git a/drivers/acpi/asus_acpi.c b/drivers/acpi/asus_acpi.c
index d3d0886..4434209 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/acpi/asus_acpi.c
@@ -753,7 +753,7 @@
/* That's what the AML code does */
lcd = out_obj.integer.value >> 8;
} else if (hotk->model == F3Sa) {
- unsigned long tmp;
+ unsigned long long tmp;
union acpi_object param;
struct acpi_object_list input;
acpi_status status;
diff --git a/drivers/acpi/bay.c b/drivers/acpi/bay.c
index 61b6c5b..23a51e4 100644
--- a/drivers/acpi/bay.c
+++ b/drivers/acpi/bay.c
@@ -90,7 +90,7 @@
*/
static int bay_present(struct bay *bay)
{
- unsigned long sta;
+ unsigned long long sta;
acpi_status status;
if (bay) {
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index ccae305..0885fc7 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -77,7 +77,7 @@
int acpi_bus_get_status(struct acpi_device *device)
{
acpi_status status = AE_OK;
- unsigned long sta = 0;
+ unsigned long long sta = 0;
if (!device)
@@ -155,7 +155,7 @@
int result = 0;
acpi_status status = 0;
struct acpi_device *device = NULL;
- unsigned long psc = 0;
+ unsigned long long psc = 0;
result = acpi_bus_get_device(handle, &device);
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 1dfec41..baeb661 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -145,7 +145,7 @@
{
struct acpi_button *button = seq->private;
acpi_status status;
- unsigned long state;
+ unsigned long long state;
if (!button || !button->device)
return 0;
@@ -253,7 +253,7 @@
-------------------------------------------------------------------------- */
static int acpi_lid_send_state(struct acpi_button *button)
{
- unsigned long state;
+ unsigned long long state;
acpi_status status;
status = acpi_evaluate_integer(button->device->handle, "_LID", NULL,
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 3c25ec7..cfa5fd6 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -76,7 +76,7 @@
{
acpi_handle temp;
acpi_status status;
- unsigned long sta;
+ unsigned long long sta;
status = acpi_get_handle(handle, "_STA", &temp);
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 7d2edf1..9485711 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -229,7 +229,7 @@
*/
static int dock_present(struct dock_station *ds)
{
- unsigned long sta;
+ unsigned long long sta;
acpi_status status;
if (ds) {
@@ -727,13 +727,13 @@
static ssize_t show_dock_uid(struct device *dev,
struct device_attribute *attr, char *buf)
{
- unsigned long lbuf;
+ unsigned long long lbuf;
acpi_status status = acpi_evaluate_integer(dock_station->handle,
"_UID", NULL, &lbuf);
if (ACPI_FAILURE(status))
return 0;
- return snprintf(buf, PAGE_SIZE, "%lx\n", lbuf);
+ return snprintf(buf, PAGE_SIZE, "%llx\n", lbuf);
}
static DEVICE_ATTR(uid, S_IRUGO, show_dock_uid, NULL);
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 13593f9..638a686 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -718,6 +718,7 @@
ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
{
acpi_status status;
+ unsigned long long tmp;
struct acpi_ec *ec = context;
status = acpi_walk_resources(handle, METHOD_NAME__CRS,
@@ -727,11 +728,13 @@
/* Get GPE bit assignment (EC events). */
/* TODO: Add support for _GPE returning a package */
- status = acpi_evaluate_integer(handle, "_GPE", NULL, &ec->gpe);
+ status = acpi_evaluate_integer(handle, "_GPE", NULL, &tmp);
if (ACPI_FAILURE(status))
return status;
+ ec->gpe = tmp;
/* Use the global lock for all EC transactions? */
- acpi_evaluate_integer(handle, "_GLK", NULL, &ec->global_lock);
+ acpi_evaluate_integer(handle, "_GLK", NULL, &tmp);
+ ec->global_lock = tmp;
ec->handle = handle;
return AE_CTRL_TERMINATE;
}
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index cb9864e..25ceae9 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -258,7 +258,7 @@
int acpi_get_pxm(acpi_handle h)
{
- unsigned long pxm;
+ unsigned long long pxm;
acpi_status status;
acpi_handle handle;
acpi_handle phandle = h;
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 235a138..f58fcbb 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -608,7 +608,7 @@
acpi_handle handle;
struct acpi_pci_id *pci_id = *id;
acpi_status status;
- unsigned long temp;
+ unsigned long long temp;
acpi_object_type type;
acpi_get_parent(chandle, &handle);
@@ -620,8 +620,7 @@
if ((ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE))
return;
- status =
- acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL,
+ status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL,
&temp);
if (ACPI_SUCCESS(status)) {
u32 val;
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index c3fed31..18ff4e5 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -190,7 +190,7 @@
struct acpi_pci_root *root = NULL;
struct acpi_pci_root *tmp;
acpi_status status = AE_OK;
- unsigned long value = 0;
+ unsigned long long value = 0;
acpi_handle handle = NULL;
struct acpi_device *child;
diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c
index d5b4ef8..9bb84d4 100644
--- a/drivers/acpi/pci_slot.c
+++ b/drivers/acpi/pci_slot.c
@@ -76,10 +76,10 @@
};
static int
-check_slot(acpi_handle handle, unsigned long *sun)
+check_slot(acpi_handle handle, unsigned long long *sun)
{
int device = -1;
- unsigned long adr, sta;
+ unsigned long long adr, sta;
acpi_status status;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
@@ -132,7 +132,7 @@
register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
{
int device;
- unsigned long sun;
+ unsigned long long sun;
char name[SLOT_NAME_SIZE];
struct acpi_pci_slot *slot;
struct pci_slot *pci_slot;
@@ -182,7 +182,7 @@
walk_p2p_bridge(acpi_handle handle, u32 lvl, void *context, void **rv)
{
int device, function;
- unsigned long adr;
+ unsigned long long adr;
acpi_status status;
acpi_handle dummy_handle;
acpi_walk_callback user_function;
@@ -239,7 +239,7 @@
walk_root_bridge(acpi_handle handle, acpi_walk_callback user_function)
{
int seg, bus;
- unsigned long tmp;
+ unsigned long long tmp;
acpi_status status;
acpi_handle dummy_handle;
struct pci_bus *pci_bus;
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 4ab21cb..89e5d2a 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -131,7 +131,7 @@
static int acpi_power_get_state(struct acpi_power_resource *resource, int *state)
{
acpi_status status = AE_OK;
- unsigned long sta = 0;
+ unsigned long long sta = 0;
if (!resource || !state)
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index ee68ac5..8a27871 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -563,7 +563,7 @@
/* Check if it is a Device with HID and UID */
if (has_uid) {
- unsigned long value;
+ unsigned long long value;
status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
NULL, &value);
if (ACPI_FAILURE(status)) {
@@ -875,7 +875,7 @@
static int is_processor_present(acpi_handle handle)
{
acpi_status status;
- unsigned long sta = 0;
+ unsigned long long sta = 0;
status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 80c251e..f8129c7 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -126,7 +126,7 @@
static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
{
acpi_status status = 0;
- unsigned long ppc = 0;
+ unsigned long long ppc = 0;
if (!pr)
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index a56fc6c..3097b75 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -274,7 +274,7 @@
static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
{
acpi_status status = 0;
- unsigned long tpc = 0;
+ unsigned long long tpc = 0;
if (!pr)
return -EINVAL;
diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
index a4e3767..81d23d3 100644
--- a/drivers/acpi/sbshc.c
+++ b/drivers/acpi/sbshc.c
@@ -258,7 +258,7 @@
static int acpi_smbus_hc_add(struct acpi_device *device)
{
int status;
- unsigned long val;
+ unsigned long long val;
struct acpi_smb_hc *hc;
if (!device)
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index d13194a..b32ba56 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -444,7 +444,7 @@
acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
struct acpi_device *adev;
char acpi_method[] = "_SxD";
- unsigned long d_min, d_max;
+ unsigned long long d_min, d_max;
if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) {
printk(KERN_DEBUG "ACPI handle has no context!\n");
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 9127036..47abb94 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -246,18 +246,18 @@
static int acpi_thermal_get_temperature(struct acpi_thermal *tz)
{
acpi_status status = AE_OK;
-
+ unsigned long long tmp;
if (!tz)
return -EINVAL;
tz->last_temperature = tz->temperature;
- status =
- acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tz->temperature);
+ status = acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tmp);
if (ACPI_FAILURE(status))
return -ENODEV;
+ tz->temperature = tmp;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Temperature is %lu dK\n",
tz->temperature));
@@ -267,17 +267,16 @@
static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz)
{
acpi_status status = AE_OK;
-
+ unsigned long long tmp;
if (!tz)
return -EINVAL;
- status =
- acpi_evaluate_integer(tz->device->handle, "_TZP", NULL,
- &tz->polling_frequency);
+ status = acpi_evaluate_integer(tz->device->handle, "_TZP", NULL, &tmp);
if (ACPI_FAILURE(status))
return -ENODEV;
+ tz->polling_frequency = tmp;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Polling frequency is %lu dS\n",
tz->polling_frequency));
@@ -356,6 +355,7 @@
static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
{
acpi_status status = AE_OK;
+ unsigned long long tmp;
struct acpi_handle_list devices;
int valid = 0;
int i;
@@ -363,7 +363,8 @@
/* Critical Shutdown (required) */
if (flag & ACPI_TRIPS_CRITICAL) {
status = acpi_evaluate_integer(tz->device->handle,
- "_CRT", NULL, &tz->trips.critical.temperature);
+ "_CRT", NULL, &tmp);
+ tz->trips.critical.temperature = tmp;
/*
* Treat freezing temperatures as invalid as well; some
* BIOSes return really low values and cause reboots at startup.
@@ -399,12 +400,13 @@
/* Critical Sleep (optional) */
if (flag & ACPI_TRIPS_HOT) {
status = acpi_evaluate_integer(tz->device->handle,
- "_HOT", NULL, &tz->trips.hot.temperature);
+ "_HOT", NULL, &tmp);
if (ACPI_FAILURE(status)) {
tz->trips.hot.flags.valid = 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No hot threshold\n"));
} else {
+ tz->trips.hot.temperature = tmp;
tz->trips.hot.flags.valid = 1;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Found hot threshold [%lu]\n",
@@ -418,33 +420,40 @@
if (psv == -1) {
status = AE_SUPPORT;
} else if (psv > 0) {
- tz->trips.passive.temperature = CELSIUS_TO_KELVIN(psv);
+ tmp = CELSIUS_TO_KELVIN(psv);
status = AE_OK;
} else {
status = acpi_evaluate_integer(tz->device->handle,
- "_PSV", NULL, &tz->trips.passive.temperature);
+ "_PSV", NULL, &tmp);
}
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
else {
+ tz->trips.passive.temperature = tmp;
tz->trips.passive.flags.valid = 1;
if (flag == ACPI_TRIPS_INIT) {
status = acpi_evaluate_integer(
tz->device->handle, "_TC1",
- NULL, &tz->trips.passive.tc1);
+ NULL, &tmp);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
+ else
+ tz->trips.passive.tc1 = tmp;
status = acpi_evaluate_integer(
tz->device->handle, "_TC2",
- NULL, &tz->trips.passive.tc2);
+ NULL, &tmp);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
+ else
+ tz->trips.passive.tc2 = tmp;
status = acpi_evaluate_integer(
tz->device->handle, "_TSP",
- NULL, &tz->trips.passive.tsp);
+ NULL, &tmp);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
+ else
+ tz->trips.passive.tsp = tmp;
}
}
}
@@ -479,7 +488,7 @@
if (flag & ACPI_TRIPS_ACTIVE) {
status = acpi_evaluate_integer(tz->device->handle,
- name, NULL, &tz->trips.active[i].temperature);
+ name, NULL, &tmp);
if (ACPI_FAILURE(status)) {
tz->trips.active[i].flags.valid = 0;
if (i == 0)
@@ -500,8 +509,10 @@
tz->trips.active[i - 2].temperature :
CELSIUS_TO_KELVIN(act));
break;
- } else
+ } else {
+ tz->trips.active[i].temperature = tmp;
tz->trips.active[i].flags.valid = 1;
+ }
}
name[2] = 'L';
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 1009261..e827be3 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -256,7 +256,7 @@
acpi_status
acpi_evaluate_integer(acpi_handle handle,
acpi_string pathname,
- struct acpi_object_list *arguments, unsigned long *data)
+ struct acpi_object_list *arguments, unsigned long long *data)
{
acpi_status status = AE_OK;
union acpi_object *element;
@@ -288,7 +288,7 @@
*data = element->integer.value;
kfree(element);
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%lu]\n", *data));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%llu]\n", *data));
return AE_OK;
}
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index e8a51a1..79409c9 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -291,20 +291,20 @@
int level);
static int acpi_video_device_lcd_get_level_current(
struct acpi_video_device *device,
- unsigned long *level);
+ unsigned long long *level);
static int acpi_video_get_next_level(struct acpi_video_device *device,
u32 level_current, u32 event);
static void acpi_video_switch_brightness(struct acpi_video_device *device,
int event);
static int acpi_video_device_get_state(struct acpi_video_device *device,
- unsigned long *state);
+ unsigned long long *state);
static int acpi_video_output_get(struct output_device *od);
static int acpi_video_device_set_state(struct acpi_video_device *device, int state);
/*backlight device sysfs support*/
static int acpi_video_get_brightness(struct backlight_device *bd)
{
- unsigned long cur_level;
+ unsigned long long cur_level;
int i;
struct acpi_video_device *vd =
(struct acpi_video_device *)bl_get_data(bd);
@@ -336,7 +336,7 @@
/*video output device sysfs support*/
static int acpi_video_output_get(struct output_device *od)
{
- unsigned long state;
+ unsigned long long state;
struct acpi_video_device *vd =
(struct acpi_video_device *)dev_get_drvdata(&od->dev);
acpi_video_device_get_state(vd, &state);
@@ -370,7 +370,7 @@
{
struct acpi_device *device = cdev->devdata;
struct acpi_video_device *video = acpi_driver_data(device);
- unsigned long level;
+ unsigned long long level;
int state;
acpi_video_device_lcd_get_level_current(video, &level);
@@ -410,7 +410,7 @@
/* device */
static int
-acpi_video_device_query(struct acpi_video_device *device, unsigned long *state)
+acpi_video_device_query(struct acpi_video_device *device, unsigned long long *state)
{
int status;
@@ -421,7 +421,7 @@
static int
acpi_video_device_get_state(struct acpi_video_device *device,
- unsigned long *state)
+ unsigned long long *state)
{
int status;
@@ -436,7 +436,7 @@
int status;
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list args = { 1, &arg0 };
- unsigned long ret;
+ unsigned long long ret;
arg0.integer.value = state;
@@ -495,7 +495,7 @@
static int
acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
- unsigned long *level)
+ unsigned long long *level)
{
if (device->cap._BQC)
return acpi_evaluate_integer(device->dev->handle, "_BQC", NULL,
@@ -549,7 +549,7 @@
acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option)
{
int status;
- unsigned long tmp;
+ unsigned long long tmp;
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list args = { 1, &arg0 };
@@ -564,7 +564,7 @@
}
static int
-acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id)
+acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long long *id)
{
int status;
@@ -575,7 +575,7 @@
static int
acpi_video_bus_POST_options(struct acpi_video_bus *video,
- unsigned long *options)
+ unsigned long long *options)
{
int status;
@@ -918,7 +918,7 @@
{
int status;
struct acpi_video_device *dev = seq->private;
- unsigned long state;
+ unsigned long long state;
if (!dev)
@@ -927,14 +927,14 @@
status = acpi_video_device_get_state(dev, &state);
seq_printf(seq, "state: ");
if (ACPI_SUCCESS(status))
- seq_printf(seq, "0x%02lx\n", state);
+ seq_printf(seq, "0x%02llx\n", state);
else
seq_printf(seq, "<not supported>\n");
status = acpi_video_device_query(dev, &state);
seq_printf(seq, "query: ");
if (ACPI_SUCCESS(status))
- seq_printf(seq, "0x%02lx\n", state);
+ seq_printf(seq, "0x%02llx\n", state);
else
seq_printf(seq, "<not supported>\n");
@@ -1217,7 +1217,7 @@
static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_video_bus *video = seq->private;
- unsigned long options;
+ unsigned long long options;
int status;
@@ -1232,7 +1232,7 @@
printk(KERN_WARNING PREFIX
"This indicates a BIOS bug. Please contact the manufacturer.\n");
}
- printk("%lx\n", options);
+ printk("%llx\n", options);
seq_printf(seq, "can POST: <integrated video>");
if (options & 2)
seq_printf(seq, " <PCI video>");
@@ -1256,7 +1256,7 @@
{
struct acpi_video_bus *video = seq->private;
int status;
- unsigned long id;
+ unsigned long long id;
if (!video)
@@ -1303,7 +1303,7 @@
struct seq_file *m = file->private_data;
struct acpi_video_bus *video = m->private;
char str[12] = { 0 };
- unsigned long opt, options;
+ unsigned long long opt, options;
if (!video || count + 1 > sizeof str)
@@ -1473,7 +1473,7 @@
acpi_video_bus_get_one_device(struct acpi_device *device,
struct acpi_video_bus *video)
{
- unsigned long device_id;
+ unsigned long long device_id;
int status;
struct acpi_video_device *data;
struct acpi_video_device_attrib* attribute;
@@ -1724,7 +1724,7 @@
static void
acpi_video_switch_brightness(struct acpi_video_device *device, int event)
{
- unsigned long level_current, level_next;
+ unsigned long long level_current, level_next;
if (!device->brightness)
return;
acpi_video_device_lcd_get_level_current(device, &level_current);
